I am playing Witcher 2 at the moment, and I am having bit mixed feelings. The game has been great so far, but some changes have been quite dissapointing. First, where the hell is Group Style!? Trying to dispatch a group of Nekkers or Drowners is frustrating as hell! You try to pick them up one by one, but at the same time they rape your arse from all directions! Even though you keep moving you are still surrounded in a second. Despite leveling up, and even trying easy difficulty I always get a feeling like I barely make it out alive. Geralt, a feared monsterslayer my arse. Crowd controlling is desperately needed, and one cant always rely on bombs and whatever. In Witcher 1 you always had a feeling of serious ownage when dispatching weaker enemies. Sorry, I greatly prefer Witcher 1's combat system. It was really interesting in my eyes and animations were badass. Group Style was my favourite too.
Also magic seems to be nerfed out a bit. I havent leveled up my magic yet so we'll see how it changes.
Art style, I liked Witcher 1's pseudo-realism. Somewhat realistic graphics, but with very cartoonish approaches where approriate (like grannies). It was both pretty and unique! Witcher 2 instead goes for photorealism. And oh boy do they succeed! Graphics are incredibly beautiful and my GTX 460 graphics card begs for mercy! But gone is the unique charm Witcher 1 had...
Also why Zoltan no longer sound like Zoltan? Voice actor is same AFAIK, but he no longer does the funny stereotype-dwarf throaty voice, I could barely recognise him! I guess it went into the trash-bin with the change of artstyle. Geralt has changed a bit too. Actor is the same, but in Witcher 1 he sounded dry and sarcastic, I loved his dry humor and how he delivered it! In W2 he has some kind of Clint Eastwood-impression going on. Change isnt big but it is noticeable.
But still, game has been excellent and except for combat system my problems have been about cosmetics.